Mercurial > hg > Applications > Grep
view regexParser/sequentialSearch.cc @ 226:b4022ba23de5
add sequentialSearch
author | Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp> |
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date | Fri, 15 Jan 2016 17:53:11 +0900 |
parents | |
children | 8be58af605da |
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#include <stdio.h> #include <string.h> #include <unistd.h> #include <fcntl.h> #include <sys/stat.h> #include <sys/mman.h> #include <sys/types.h> typedef struct bufferList { unsigned char buff; unsigned char buffptr; unsigned char buffend; unsigned char matchBegin; } BufferList, *BufferListPtr; typedef struct { caddr_t file_mmap; off_t size; } st_mmap_t; #include "state.cc" int main(int argc, char **argv) { char *filename; for (int i = 1; i < argc; i++) { if (strcmp(argv[i],"-file") == 0) { filename = argv[i+1]; i++; } } int map = MAP_PRIVATE; st_mmap_t st_mmap; struct stat sb; int fd; if ((fd=open(filename,O_RDONLY,0666))==0) { fprintf(stderr,"can't open %s\n",filename); } if (fstat(fd,&sb)) { fprintf(stderr,"can't fstat %s\n",filename); } st_mmap.size = sb.st_size; unsigned char *file_mmap = mmap(NULL,st_mmap.size,PROT_WRITE|PROT_READ,map,fd,(off_t)0); BufferList buff; buff.buff = buff.buffptr = buff.matchBegin = file_mmap; buff.buffend = buff.buff + st_mmap.size; stateSkip(buff); close(fd); return 0; }